diff options
| -rw-r--r-- | src/vppinfra/linux/mem.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/vppinfra/linux/mem.c b/src/vppinfra/linux/mem.c index 734f5c4788c..21aaa55fc00 100644 --- a/src/vppinfra/linux/mem.c +++ b/src/vppinfra/linux/mem.c @@ -530,6 +530,7 @@ clib_mem_get_page_stats (void *start, clib_mem_page_sz_t log2_page_size, { int i, *status = 0; void **ptr = 0; + unsigned char incore; log2_page_size = clib_mem_log2_page_size_validate (log2_page_size); @@ -551,6 +552,19 @@ clib_mem_get_page_stats (void *start, clib_mem_page_sz_t log2_page_size, for (i = 0; i < n_pages; i++) { + /* move_pages() returns -ENONET in status for huge pages on 5.19+ kernel. + * Retry with get_mempolicy() to obtain NUMA node info only if the pages + * are allocated and in memory, which is checked by mincore(). */ + if (status[i] == -ENOENT && + syscall (__NR_mincore, ptr[i], 1, &incore) == 0 && (incore & 1) != 0) + { + if (syscall (__NR_get_mempolicy, &status[i], 0, 0, ptr[i], + MPOL_F_NODE | MPOL_F_ADDR) != 0) + { + /* if get_mempolicy fails, keep the original value in status */ + status[i] = -ENONET; + } + } if (status[i] >= 0 && status[i] < CLIB_MAX_NUMAS) { stats->mapped++; |